Marcus l



} ignitrh'gtatrs gaunt @ffirt.

is constructed to strike; The spindle Got the handle carries a wiper,

MARCUS L. DELAVAN AND JOB DYSON,- OF NEW BRITAIN, CONNECTICUT.

Letters Patent No. 67,030, dated July 23, 1867.

IMPROVED DOOR-BELL- fiIlgt 5x11211111: want In in flgrse fitters 21m at making part at the 21m,

TO ALL WHOM IT MAY CONCERN:

Be it known that we, MARCUS L. DELAVAN and JOB DYSQNHJOtl} of New Britain, in the county of Hartford, and State of Connecticut, have invented a new and useful Improvement on Door and other Bells, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings forming part of this specification, in which Figure 1 represents an interior or sectional face view of a bell constructed according to our improvement; and

Figure 2 a sectional view at right angles to fig. 1.

Similar letters of reference indicate corresponding parts.

Our improvement has reference to that description of bells in which the bell proper is stationary, and the hammer is made to produce the strike by means of a rotating crank or handle, and more particularly to that description-of such bells in which the turning or working the handle in either or both directions serves to give the strike. The nature of our invention in this connection consists in a combination of mechanism whereby the turning of the handle in either direction actuates a single or the same hammer to ring the bell.

Referring to the accompanying drawing, A is the frame or structure which carries the working-mechanism of the bell, B the crank or handle for operating the same, and 0 its spindle or shaft; D is the stationary stem on which the bell proper, E, is screwed or hung; F is a longitudinally-moving slide, carrying the hammer G, and shot outwards when released, as hereinafter described, by a spring, H, to cause the hammer to strike the bell. This slide has pivoted to it, say at the opposite end to which is arranged the hammer, a cam, L which is free to oscillate on its axis to an'extent that has its limits controlled by stops a a, which the cam in oscillating J, having any desired number of projec tions, 6, on it, which, as the handle is turned or rotated, act against either side, 0 c, of the cam according to the direction said handle is turned, to work back the slide F, and with it the hammer, till the projections 6, that is, one of them at a time, pass the extremity d of the cam, when the slide being suddenly released causes the hammer to strike-the bell, the stopsa a restricting the vibra I to retain it in proper position for the studs or projections b, to actuate the cam as described whichever, way the wiper J and handle are turned. The advantage of operating the bell in either or both directions of the handle is well understood, while by this our improvement, causing the one hammer to produce the same, much complication is avoided. It will be obvious that instead of these two stops at a to the oscillating cam I, a single stop aflixed to thelatter, and playing in a slot in the slide, or vice versa, may be used; also that various equivalents for the slide F and wiper J may be substituted, and that the hammer G may be indirectly instead of directly connected with the slide or its equivalent.

What we here claim, and desire to secure by Letters Patent, is-

The combination with the slide F or its equivalent, carrying or operatin or oscillating cam I, controlled by a stop or steps as described, and wi together by the turning or rotation of the handle Bin eitherdirecti specified.

g the hammer G, of .the vibratory per J or its equivalent, for operation on, to strike the bell, substantially as MARCUS L. DELAVAN,

JOB ,DYSON.

Witnesses:

WALTER 'HAsLAM, Gronen JOHNSON. 

